<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{artObj.title}}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="artObj.aut_name" :label="formatDate(artObj.pubdate)">
        <template #icon>
          <img :src="artObj.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button type="info" size="mini" v-if="artObj.is_followed === true" @click="unFollowedFn">已关注</van-button>
            <van-button icon="plus" type="info" size="mini" plain
              v-else
              @click="followedFn">关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
        <van-button icon="good-job" type="danger" size="small"
          v-if="artObj.attitude === 1" @click="likeArticleFn(true)">已点赞</van-button
        >
        <van-button icon="good-job-o" type="danger" plain size="small"
          v-else @click="likeArticleFn(false)">点赞</van-button
        >
      </div>

      <!-- 文章评论区域 -->
      <comment-list :artId="$route.query.aid"></comment-list>
    </div>
  </div>
</template>

<script>
import { articleDetailAPI, followedAuthorAPI, unFollowedAuthorAPI, likeArticleAPI, unlikeArticleAPI } from '@/api'
import dayjs from 'dayjs'
import 'dayjs/locale/zh-cn' // import locale
import * as relativeTime from 'dayjs/plugin/relativeTime' // import plugin-插件
import CommentList from './CommentList.vue'
dayjs.extend(relativeTime) // use plugin
dayjs.locale('zh-cn') // use locale
export default {
  data () {
    return {
      // 文章数据对象
      artObj: {}
    }
  },
  components: {
    CommentList
  },
  methods: {
    // 格式化多久之前
    formatDate (dateStr) {
      var a = dayjs()
      var b = dayjs(dateStr)
      const c = a.to(b) // 返回指定时间到相对时间字符串
      // console.log(c)
      // 将结果返回给函数调用的地方
      return c
    },
    // 关注按钮 -> 点击事件
    async followedFn () {
      await followedAuthorAPI({ authorId: this.artObj.aut_id })
      this.artObj.is_followed = true
    },
    // 点赞 -> 点击事件
    /*     async likeArticleFn () {
      if (this.artObj.attitud === 1) {
        await likeArticleAPI(this.artObj.art_id)
      } else {
        // 已点赞 -> 点击事件
        await unlikeArticleAPI(this.artObj.art_id)
      }
    }, */
    async likeArticleFn (bool) {
      // 由点赞 -> 已点赞
      if (bool === true) {
        await unlikeArticleAPI(this.$route.query.aid)
        this.artObj.attitude = 0
      } else {
        // 点赞 -> 点击事件
        await likeArticleAPI(this.$route.query.aid)
        this.artObj.attitude = 1
      }
    },

    // 点击已关注按钮 -> 点击事件
    async unFollowedFn () {
      // 点击已关注，关注按钮出现
      await unFollowedAuthorAPI(this.artObj.aut_id)
      this.artObj.is_followed = false
    }
  },
  async created () {
    const res = await articleDetailAPI({
      artId: this.$route.query.aid
    })
    console.log(res)
    this.artObj = res.data.data
  }
}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
